Sewing-machine.



J. KIEWIOZ.

SEWING MACHINE.

APPLICATION FILED PEB.27, 1914. 'Ip I I 8,290. Patentd Nov. 24, 1914.

'Z SHEETS-SHEET l.

J. KIBWICZ. SEWlNG MACHINE. APPLICATION FILED MK2?, 1914.

l, l l 8,29@ Patented Nov. 24, 1914.

2 SHEETS-SHEET 2.

17 'Lfnesses i JGHN'KIE'WZ, F BOSTON, MASSACHUSETTS, ASSIGNOR T0 THE EEECE BUTTON HOLE MCHNE CQMPANY, OF BOSTON, TIIASSACHUSETTS, A CORPORATION Ol? MAINE.

SEVJN G-MCHINE.

A) intenten.

, pplication filed ebriiary 27, 1914. Serial No. 82l,9$.

'l'o @ZZ zc/7mm, it may ,Concern Be it lznown that l, JHN Krnwroz, a citizen of' the United States, residing at Boston, count)7 of Suffolk, State of Masse ehusetts, have invented an improvement in Sewing-Machines, of which the following description, in connection with accompanying drawing, is a specification, like charac,- ters on the drawing representing like parts.

This invention relates to sewing machines ot that type which employ a bender rnechanism for making e bend in the Work at the time that the needle is given its work-penetrating thrust so that the needle may enter and leave the work on the saine side, thus forming a 1nlin'd stitch. Sewing machines of this type are used for various purposes. among which might he mentioned the linishing` of h uttonholes in the manufacture ot' button shoes. In the finishing of buttonholes hy a sewing machine of this tlvpe the thruin ends of the buttonholes are gathered together and then are held in'place by a hlind stitch which is formed hv the ioint operation ot the `eender and the stitchorminey mechanism. i

rl'he objects or' my present invention are to providea .sewing machine of this type with an improved lorln of bender and its operatin; r mechanism which is simple. in its construction. is so constructed that the operator has plentyv of room above the work support to manipulate the work, is capable of quick adjustment to lering the bender into different adiusted positions depending on the thickness of the material operated on, to provide a machine of this class which can he run at a.- high speed without producingy anv undesirable noise or vibration; to provide a construction which admits of the needle har being.lr readilyv adjusted into its correct`operating; position, and to otherwise improve machines of this type. all as will he more tullv hereinafter described and then pointed out in the appended claims.

ln order to illustrate the invention. l have shown it asit might he einhodied in a hutonhole linishingA machine, although l desire to stale that is eouallv apnlicahle to blind tfftch machines adapted for other purposes.

le'iorrinf lo the drawings whereir illust sclccteil mnh/.aliment ver' a sid view M i e -.inachine enihmifxing niv invention having a part thereof broken out to show some the interior construction; Fig; l is a pian view with parts of the work snp )ort brolten out: Fig. 3 is an underside 'iew: Fig. l is a section on the line Ikea., Fig'. l: 5 is a detail view of the bender and presser foot; Fig. (l is a sectional view showing the wav in which the needle har carrier ad ius-ted; Fig. is a section they line J)-i. lfig. l. I

Ythe machine as a whole comprises a lia '3, frame presenting@r a work support'. sniteble stitch-termine; mec anisni siuated beni 'th the work support, and a liender .'tnated. above the work support and udnited to .torni bends in the mate-rial ae the needle peut trates the latter, these heine` the varie which are connnoniv found in hlind .h sewing' machines of this nature. L

In the drawings the traine or base of the sewing machine is shown at l. and it he crmstructed in any suitable way, the upper surface 2 thereof constitiuzingy a-worl support on which the work is sustziined. and ythis worl-z support is provided. with a work-receiving groove 3 into which the work is bent h v the bender Li. as will he presently descrihed. Situated hencalh the work support 2 is the usual stiteh-torzning;- mechanism comprising the needle 5 and the shuttle G. lloth the needle and the sin ttle are actuated from a driving shaft 'l' situated hencath the work support 2. The shuttle 6 is herein shown as ot' the rotary type, it' being sustained in a shuttle carrier 8 mounted on a stud Si depending troni the work support. which shuttle carrier is operated hv bevel gears 10 from a shaftl1 that is driven trom the main shaft 'i' lov am' suitable mechanism which is not herein shown,

as it forms no part of the present in\'ei'it`in.

The. needle 5 is sustained h v a needle bar 1:2 which reciproeates in a needle har carrier i3 mounted on a shaft 14 about which it rocks to five the needle its vihratorv inove-A 'm mante" 40 link 35E 151: ,Wn mi; g

h :an apswxtmc in the iq,

f1 und Swirl (and of the Pwd ba'izwcc,\ :ln adj -mgo the "whe ils aliases a thick portion ol the material comes under the bender, hen the bender will have made the 'required bend. in the material before the lever 2 has been given its complete movement, and under these circumstances the spring 36 will give suiliciently io prevent the bender `from injuring the work. Moreover,` the construcimi shown involving the spring 36 constiiutcs a, hender-operating (levice which is noiseless in its operation. The position olE the hendel' relative to the actuatingglever 2* can he readily adjusted by openting the adjusting' nutV 4U, the spring 3G `being active at all times to taire up any lost motion and hold the Darts in relative l. position. yflic simple act of hacking1 ofi' the .nur l will serre to lengthen ihe link 33,

.vhile screwing up the nut vvill shorten the link thereby eliectingzj the desired adjustvvide a cushion stop for the bender which l comes into action .vhen the bender ap-- preaches lhe lower limit of its movement, which cushion slop Will take up any lost molion due to Wear el the parts. TWhile this cushion stop may he made in various 'ways '-.vithout departing' from the invention l; have herein illustraed a spring 30 which is adapted to he engaged by the lever 27 as the header ami-roaches the lower limit of' its nmvemr-ui, 'lhis springr G0 isherein shown cred to ehe hase l oi the machine and ituaed inimcdLit-ely in the rear oi' the if i e r just below the piot thereof. lNhen the header raised the springl w'll preferaol'v have no contact with the' lever, bui; when the lever is moved to depress the bender it will engage the spring' and the .shrineY acts during the latter part of the niovemen't of the bender to take up any lost motion and to prevent, an undue throw of she header in case the cam 32 should become uoru. and whenever the machine is run without any material to be acted upon.

le will he noted that the mechanism 'for opera-lling the bender is comparatively sim plv. coni'prisingzr 'mcrelv the actuating!y lever 2T and the link connection between the lever :rmi the bender. hlorei'iver. it will be. noted ihn; lever 2T is nivoied to the bender .sufigior :il near the base wm: io the wol-i; supporre, and by' this con- 'iczi vilu'aion of the pal'ts is reduced. Moreover, l propose lo so construct lhe actuaiuc' lewi- '27 chai he iv eht lhercof is air profiima'iel'v equally di.` "ihutcei above and below the iiivoi'al sind '25?. and. therefore, said hrr-r is a balanced lover. This im- 'porliant in a, high speed machine because it Apresser-foot-lifting member thereofl and adjaserves o reduce vibrations. I also desire to lcall attention to the fact that by forming the bender of arcuate shape orarating in a similar-shaped guideway, l have provided tion Without any appreciable vibration.

Associaled with the bender is the usual presser foot 43 which is normally held against the Werl/phy spring pressure, but which is lifted from the work 'whenever the machine is brought to rest. This presser foot 43 is sustained on a presser foot car-v rier lil herein shown as a U-shaped memher pivoted on a stud #l5 secured "cc the bender support 2l. This lever has a por tion #i6 which estende through the top 2 of the frame l and to which is secured a rear* Warfilly-extending nger il?, to the -end of which is atached a spring fl the latter be ing connected to the frame at 49 and tending' normally to keep the presser fooL yield' ingly held against the Work. The "driving shaft i' driven by any suitable n ieans, and will also preferably be provided with a suit- .able stop motion for bringing the machine to rest with the parts in a predetermined position in the cycle of operations. This stop motion will also preferably coperate with the arm i7 to raise the presser foot whenever the machine is thus broughtI to rest. Any suitable stop mechanism adapted to accomplish the above results may be employed. and l have herein shown one somewhatsimilar to that illustrated in my co-l pending application Se. No 816,433, filed Februarv lill-fl. Since his stop motion is fully illustrated and described in said copeuding applicijiion, it 'is not necessary to re'ler to it in deail herein, but 1t will su'liice vlio say that the treadle is connected by a link with an arm G5 on the rock shaft 66, and this rock shaft has an arm. 67 thereon which is adapted to engage an arm or 52 that is mounted to turn on the spring-actuated slide 53 which controls the clutch -mcchanism.

vThe arm 5&2- is, however, held from mov@ ment longitudinally of the slide 53. The driving' shaft 7 has a stop cam 50 thereon which determines the particular point in the cycle of yoperaiions at which the machine will he brought to rest. So long as the treadle is deriressed the member 52 heldl out of engagement with the cam 50, but when the treadle is released said member 52 Will be moved to bring the roll 5l thereon into engagement xvih the cam 50, said cam ci'introlling the point at which the machine will be brought to rest. ii'r'hen the machine is ifough coiese the raised porlion of the cam 5U engages the roll 5i. and depresses seen in i ig. (i:

the arm 5;, y

'in my Frese the arm el? con.M

connected to tbe nected to 'the lower end tbe presser i' it i l lever extended so es to underlie tbe ing part and es e result 'when the niecliine is brought to resi; en d the lifting perl', depressed bj! the cem 50, seid perl; acting on tbe extension 47 operntcs to reise *die pre r loot from tbe 'Werk eefainsi: libre action o? tbe spring e9.

Tbe benfiler support 2l is sliewn provided et inf iree end with bearing surface YO ugeinst which o. similar surfziee 72 on tbe p r toot engages, seid bearing surit'nce @neming `to steadv tbe movement of libe presser loot, as Will be obvious,

ln ehe foregoing specification and in the :tolltrrfing,1 claims 'T he ve used tbe term .5. Work enfl'iport. ne indicating the top el the bese freine l.- and not simply the portion tliereo1 with Which'the Work has Contact. "llbile l have illustrated e selected embodiment of niv invention, l do not; wish to be limited to tbe constructional features iiovn.

Having described in v inventioinwvbet l im z. ien :ind desire to secure-by Letters litent .Y

l. ln e sewing machine, tbc combination with e .work support, of Stitcli-foxiiing nieehenisni beneath the Work support, en inverted llsbepcd bender' support, n vibrating: bender mounted on said bender support, e bendf-cr actuating lever Vpivoted to said bendt-xr senr-ori; extending through the Work Sun-prut end cmniccted to the bender and by which tbe letter is operated.

ln n sewing machine, tbe combina.- tion 'with a bese freine, of :in inverted U- elinped bender support secured et one end to the freine and `novidecl with e longitudinally -irnrved guide, e longitudinally curved bender ope in seid guide, and Ineens 'for actuating therbender. l ln e sewing machine, the combination with e base freine, of an inserted. U-shaped bender support secured :it one end to the frame' and provided with :i longitudinally curved ride. :i longritndinall?,7 curved bender operating in seid guide, n bendenopenting lever pimted to smid bender support and bender and'nieens io :1c-

tnule Suid lever. in sewing n yb i base freine, of :i bender support Sc- Witli e Work support, of e drivingsbni; ated beneath 'tbe Work support, e bender support situated above the work support :ind provided with an arcuetcshaped bender guide, en arcuatesbztped bender operating in said guide, en actuating; lever pivoted te said bender support adjacent 'the nforlr engr port end connected to the bender. end menne for vibrating seid bendenonereting leref.

'Z'. In e sewing` machine, tbe combination with a Work support, of bender support; provided with e curved bender guidi@ groove, a curved bender operating in sa, groove, e bendernctueting lever, ineens to vibrate Said lever, and e link pivoellj/ con nected to the bender and edinstsibly conneclv ed to said lever.

il. In e sewing machine, tbe combi-:iw

tion with. a Work support, or e bender.

Support situated above tbe Work erop port, a bender slidably mounted on sind bender support, a beuder-opereting lever,

link Bivoted directly to the bender and idf gusta ly and yieldingiy connected to 'tbe lever.

9. ln a servingw machine, the combination with a work support, oi; e bender erinnert.

situated above the 'work support., bender- I slidebly mounted 'on seid bender enpporfjg,

a bender-operating lever, e screw-threaded link l loosely through the lever. n coller on sind' link, e spring interposed between the coller and the lever, and en adjusting screw for edjusting the tension of the spring.

umchine, libe combination cnrcd thereto, :in :trennte bender slidzibly sustained by seid support for movement. in on :1i-emile pelli, and ineens for operating the bender. Y

5. ln a sewing machine,l tbe coniliinntion with ,51 bese iframe, of e bender support secured thereto, an arenal-e bender sustained bv :seid support, :i bender-actuating lever pivotcd lo said bender support and eonne ted to tbc bender, and menne to vibrate said lever.

5. ln n sewing machine, tbe eoinbinetion 10. ln a serving machine, tbe combination. with a Work support, of an inverted lb shaped ebendersupport Situated above the Work support, a bender Slidebly mounted on seid bender support, means for ecnlntin tbe bender, a presser fool; and en inverted U- shaped presser foot carrier pivoted 'to .seid bender support.

ll. ln a sewingl machine.l the combination with n Work support having e Worlebending groove, of u bender support eecnrerl at one end to the work support end provided with a, curved bender-receiving guideq :i curved bender operating in enid guide, :i bender-:1cn hunting lever connected to tbe bender sind pivotally connected to 'the bender support adjacent the Work support, and inenn'rM to vibrate seid lever.

12. In a sowing machine, the combination with a base frame having' n work supporting surface provided with :1 worlebending groove, of a bender support secured 'et one end to thc'freme and provided with a curved bender-receiving:r guide, a curved' bender operutingin said guide, n bender-actuating lever connected to tbe bender andpivotefll",TA connected to the bcndei1 support adjacent to but above the iframe, and means to vibrate said lever.

pivotcd to tbe bender and erbending4 lill.

lll?

lin

1 3. In n sewing machine, the cornbinationflllll aerienne Wih a bese frame having a Work supporb ing portion provided with a WOrk-bending groove. ci a curved bender support secured at one end io fthe, frame end provided ivih u curved bender-receiving guide, a bender op- @ratingl1 in raid guide, e. bender-a .ueiing lcvcr connecred tb he bender and pivotally conncried Lo the bender suppof said lever extending; through rho lui-rer adjacent the irzune, and ineens to vibrate said lever.

il. l n a serving machine, 'die combination with a hase freine, of an inverted i-sheped bender' suppone secured et one end to -be base freine and provided with a guidevvay curved in the direction of its length, a, curved bender reciprocable in said curved guideivay, la balanced lever pivoted to Jche bender supperand eonnecied to the bender, and means for operating said lever.

15.3. ln a serving machine, the combination with a `work support, of stitch-foi'n1iiig mechanism including a horizontelljwrecip locating needle our eituered beneath qbhe norlr Support, a verticalljvedjusiuble needle bur cari roeutes, and ineens lzo reciprocate be .needle ber.

1G. ln a sewing macerie, the eombinnion with e vsorl: suppora, ofA a horizonallvreciprecating needle ber eimer-ed beneath the work support, a medie hir carrier in which said needle bar reciproci-wee, end means at each end of ehe needle bar carrier 'for sustninine' lie same for vertical adjustment.

l?. in a sewing machine, the combinazion vvitli :i u'orlr support, oi a needle bar carrier situated beneath the work support, n shaft sustained bv Suid carrier, :i block to which one end of Lche carrier is secured for vertical adjustment, a 'verticallyndjustable bearing for shaft b v 'which `he other end of the needle bur carrier is'snsiained, e needle bar mounted in said carrier for horizon'ral reciprocaing movement, and means to ectuae the needle bar.

1S. ln n sewing machine, *bhe combination wizii e. work support, of a bender support siiuaced above the vvorlr support, e vibreing bender Sustained by said bender support, en acuziting lever for operating the bender, a drivingl having a earn thereon for aciuating the lever, and a. cushion stop situated in he palzh or" movement the lever and nosicioned "eo be engaged bv said lever as it approaches 'i-he lower end of its movement, Said stop being seperated from the lever when the bender is raised.

19. ln a serving' machine, the combination with a work support, of a bender support situaed above the Work snpporc, evibrating,r bender enshrined by said bender support, un actuating lever extending through the Work support 'for operating the bender, ,a driving shaft having e cam lchereon for .er in which seid 'needle bar reeipuccuating he lever, and e cushion stop situated 'to engage the lever and. resisr the Workbending movement of the bender as 'the lai'- ier approaches the lower limit of its Inoveinen.

20. in e ving machine, the combination with a Work suppor, of 4a bender support situated above the work support, a vibrating bender sustained by said bender sup port, en actuating lever for operating; Jche bender, n driving shaft havingl a cuni thereon for uccuaing the lever, and e resilient member eituaed to be engaged by 'bhe actuuting lever as hc bender approaches the lou'er liinil; olf its movement,

En a sewing; machine, he combination C bender support and extending through theA top of the rarne, and means beneath bhe frame ro operaie the lever. y

23. ln a se *ing machine, he combination with a base frame, of a bender support Situated above the frame, a bender slidably mount-ed on the bender support, la bender operating lever extending through ehe top of the "freine, a link pivotally eonnecing the bender and lever, and ineens io aobunte he lever. l

2li. In a serving machine, ehe conibinaiion with u bese freine, of a benderenppor situ zit-ed above the raine, bender sli/bibly mounted on the bender support, a benderoperaing lever extending through the frame top, a link pivoed directly to the bender and ndjusrubly and yieldingij/ connected o the lever and means to operate he lever.

f2.5. in a sewing machine, the combination with a Work support, of an inverted ici-shaped. bender support situated above the work suppor, a bender slidably mounted on the bender support, a lever pivoted to `he bender support and connected to the bender, seid lever extending' through the vfork support and means to actuate the lever.

26. ln a sei'ing machine, the combination with a work support, of aetetionary bender support snsained thereby, a bender carried by the bender support for movemenJ relative thereto,.a lever extending rhrough the 'work support and connected to -the bender, and mea-ns4 beneath the Work support to actuete the lever.

27. ln a sewing machine, the combination with a Work support, or a eteionarjv bender suppor'l ,sustained thereby, e bender cer- 

